Klein Tools Square Recess Scre...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$62.17
$9.66
Klein Tools 668 #1 Square Recess Screwdriver 1-1/2''

Klein Tools Square Recess Screwdriver #1 Tip 1-1/2 Inch Shank Cushion Grip Chrome Plated

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Model: 668
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$62.17
$9.66
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Klein Tools Square Recess Screwdriver #1 Tip 1-1/2 Inch Shank Cushion Grip Chrome Plated

Professional-Grade Square Drive Screwdriver for Electrical Applications

The Klein Tools Square Recess Screwdriver delivers professional-grade fastening performance for electrical and construction applications. This precision-machined screwdriver features a #1 square recess tip with 1-1/2 inch shank designed for electricians, linemen, and electrical professionals, providing the reliable performance and industry-leading quality that tradesmen demand from America's most trusted tool manufacturer.

Professional Features & Benefits

Precision Performance

  • Precision-Machined Tip - Exact fit design ensures optimal torque transfer and prevents cam-out with Klein quality engineering
  • Chrome Plated Shaft - Special heat-treated construction with chrome plating provides superior corrosion resistance and durability
  • Cushion-Grip Handle - Ergonomic design delivers greater torque capacity and enhanced comfort during extended use
  • Integral Flanges - Inside handle construction provides solid, twist-resistant blade anchor for professional reliability

Safety & Durability

  • ASME/ANSI Compliance - Meets or exceeds applicable specifications for professional safety standards and Klein quality assurance
  • Tip-Ident Color Coding - Color-coded handle end quickly identifies screwdriver type and tip orientation for efficient workflow
  • Professional Construction - Heat-treated steel shaft with precision manufacturing ensures long-lasting performance under demanding conditions

Technical Specifications

Overall Length: 3.438 inches (8.7 cm), Shank Length: 1.5 inches (3.8 cm), Tip Size: #1 Square Recess, Weight: 2.4 oz (68 g), Material: Steel construction with chrome plated finish, Handle: Cushion-Grip design, Shank Type: Round configuration, Non-insulated design for general applications

Installation & Usage

  1. Select appropriate square recess screw and verify #1 tip compatibility for proper engagement
  2. Insert screwdriver tip fully into square recess ensuring complete contact for maximum torque transfer
  3. Apply steady downward pressure while turning to prevent cam-out and maintain professional control
  4. Use cushion grip handle design for enhanced comfort and torque application during extended use
  5. Verify secure fastening and proper seating of electrical components per installation requirements
  6. Store in dry location to maintain chrome plating and prevent corrosion for long-term reliability

Professional Applications

Ideal for:

  • Electrical Installation - Combination head receptacles, switches, and electrical panel screws in residential and commercial applications
  • Construction Work - General fastening applications requiring square recess drive compatibility and professional reliability
  • Telecommunications - Equipment mounting and connection hardware with square drive requirements
  • HVAC Systems - Control panel fasteners and equipment mounting applications
  • Industrial Maintenance - Machinery and equipment fasteners with square recess configuration
  • Residential Wiring - Outlet and switch installation with combination head screws
  • Commercial Electrical - Panel board and electrical equipment fastening applications
  • Professional Service - Field service and maintenance work requiring reliable square drive tools

Precision Engineering Advantage

Klein Tools precision-machined tip design ensures exact fit with square recess fasteners, eliminating cam-out and providing superior torque transfer. The heat-treated, chrome-plated shaft construction delivers exceptional corrosion resistance and durability for professional electrical applications, while the cushion-grip handle reduces hand fatigue during extended use.

Why Choose Klein Tools Quality?

Since 1857, Klein Tools has maintained its commitment to manufacturing America's finest electrician tools through precision engineering, rigorous testing protocols, and unwavering dedication to professional safety standards. This square recess screwdriver exemplifies Klein's legacy of excellence with ASME/ANSI compliance, professional-grade construction, and the trusted reliability that electrical professionals depend on for critical installations and maintenance work.

Manufacturer Resources

Spec Sheet

Product Specs

Color Code:
Green
Handle Color:
Black
Insulated:
No
Magnetic:
No
Overall Length:
3.438'' (8.7 cm)
Shank Length:
1.5'' (3.8 cm)
Shank Type:
Round
Tip Size:
#1
Tip Type:
Square-Recess
Department:
Electrical
Product Group:
Hand Tools
Product Subgroup:
Screwdrivers & Drivers
Product Material:
Steel
Product Weight:
2.4 oz (68 g)
Product Type:
Screwdriver

Klein Tools 668 – Frequently Asked Questions

1) Will a Klein 668 #1 square recess screwdriver drive the green combination-head screws on receptacles and switches?
Yes. The Klein 668 is a #1 square-recess (Robertson) driver, and #1 square is the drive used on the combination-head screws found on receptacles, switches and device terminals. The green handle end is Klein's Tip-Ident color code for the #1 square tip, so you can pick it out of a pouch without reading the shank.
2) Is the Klein 668 square recess screwdriver insulated for live electrical work?
No. The 668 is a non-insulated driver. It is not rated for work on energized conductors, so if you need to work live you want an insulated 1000V-rated screwdriver instead, not this one. The chrome-plated steel shank here is a general-purpose, corrosion-resistant shaft.
3) Will the Klein 668 hold a screw on the tip for one-handed overhead work?
No, it is not magnetic. If you are setting screws overhead in a ceiling box or feeding a device screw one-handed, you will need to start the screw by hand or use a magnetizer. The tip is precision-machined for a tight fit in the recess, which helps a screw sit on the tip, but there is no magnet holding it.
4) Should I use a #1 square driver or a #2 for the screws I have?
Square recess sizes are not interchangeable, and running a #2 driver in a #1 recess (or the reverse) is how you round out the socket. The Klein 668 is a #1 only. #1 square is the common size on electrical device screws and smaller wood and sheet metal fasteners; heavier deck and structural square-drive screws usually take #2. Match the driver to the recess, don't force the closest one in the pouch.
5) Does the Klein 668 meet ASME/ANSI screwdriver specs for a tool crib or jobsite tool list?
Yes. Klein states the 668 meets or exceeds applicable ASME/ANSI specifications. That covers the tip geometry and torque requirements a procurement spec normally calls out for a hand screwdriver. Note it is a non-insulated tool, so it does not satisfy any spec calling for 1000V insulated drivers.
6) What part number do I order for the Klein #1 square stubby, and how heavy is it in a pouch?
Order Klein Tools 668. It weighs 2.4 oz (68 g), so it adds almost nothing to a pouch or a service bag, which is the point of carrying a stubby square driver alongside a full-length one.
7) Will the blade twist loose in the handle if I lean on it?
The 668 uses integral flanges inside the cushion-grip handle to anchor the blade against twisting, and the shank is heat-treated steel with chrome plating. The cushion grip itself is what lets you put real torque through a tool this short, since you are gripping the handle diameter rather than the length of a shaft.
How fast can I get the Klein Tools 668 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools 668 come with a warranty?
Absolutely. The Klein Tools 668 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools 668?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools 668 from ZenSupply?
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